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Research notes on every problem, and a library of the papers behind them. Built from the open erdos repository.

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Claim. T(n)=n−Θ(nlog⁡n)T(n)=n-\Theta(\sqrt{n\log n}), where T(n)=max⁡{τ(G):∣V(G)∣=n}T(n)=\max\{\tau(G):|V(G)|=n\} is the largest clique transversal number of a graph on nn vertices, so both displayed questions of Problem 610 have the answer yes. The claim was posted on the site's discussion thread on 21 April 2026 by the account Przemek Chojecki, with a four-page note, A note on the clique-transversal number, dated 21 April 2026 and naming no author in its text, and a Lean file erdos610.lean; the post credits the note to an AI system (GPT-5.4 Pro) and the Lean file to another (Aristotle).

What the postings contain. The note states the theorem, proves the transfer from a clique coloring to a clique transversal through the complement of a largest color class (its Lemma 2) and the triangle-free equality τ(G)=n−α(G)\tau(G)=n-\alpha(G) (its Lemma 5), and quotes Corollary 2 of Joret, Micek, Reed and Smid and Kim's Theorem 1.1 as its Theorems 3 and 6 without proof; its Remark 8 says that the argument does not settle the Erdős--Gallai--Tuza conjecture τ(G)≤n−f(n)\tau(G)\le n-f(n) of Problem 151. The Lean file (336 lines, import Mathlib) defines maximal cliques, clique transversals and clique colorings, proves the transfer and the triangle-free equivalences, declares jmrs_theorem and kim_theorem with sorry under a docstring saying their proofs are beyond the file's scope, and proves upper_bound, lower_bound and main_theorem from them. It is a kernel-checkable derivation of the statement from two unproved inputs, not a proof of the statement; the corpus holds no build of it.

Standing. The claim is claimed. The site adopted the label PROVED (LEAN) after the post (the page's line of additional thanks names the poster, while its commentary credits Joret, Micek, Reed and Smid; the community database lists that status as of its record's last update of 7 June 2026), which records the site's adoption of this route; the note is unrefereed, its Lean file proves nothing about the two inputs, and two thread posts of 18 May and 17 July 2026 say the formalization essentially assumes what it needs to prove and that the site should not call the problem proved in Lean. The mathematics the note assembles is that of the accepted claim Joret--Micek--Reed--Smid, which carries the problem's standing; the 26 August 2026 gap claim against that paper's Theorem 1, recorded there, bears on this claim equally.

Depends on. Joret--Micek--Reed--Smid, whose corollary supplies the upper bound; the lower bound is Kim's theorem, a library result cited on that page.